US Patent 7478111 System and method for carrying out legacy application transitions

A system and method for carrying out transitions from legacy to new applications includes the definition of relational database views to permit relational queries defined for a database having a legacy schema to be run against a database having a new schema. The relational database views for the database having a new schema are generated with reference to and by selection from a set of database views defined for possible schema changes. The post-transition display of legacy display pages is handled by the preferred embodiment through the use of a view registry that associates a defined display view with a legacy view engine and a legacy display page.